Some more level 3 questions

[m4tty]

Hi,

Can someone let me know the formulas used for the questions below

7. Capacitors of 2uF and 8uF are connected in series across a 100V DC supply. What voltage appears across the 8uF capacitor ?

a) 20V

B) 80V

c) 100V

8. A straight length of wire moves through a uniform magnetic field. The e.m.f. produced across the ends of the wire will be maximum if it moves:

a) along the lines of magnetic flux

B) at 45

 

[PoorFish]

7. Capacitors of 2uF and 8uF are connected in series across a 100V DC supply. What voltage appears across the 8uF capacitor ?a) 20V

B) 80V

c) 100V

?

8. A straight length of wire moves through a uniform magnetic field. The e.m.f. produced across the ends of the wire will be maximum if it moves:

a) along the lines of magnetic flux

B) at 45

 

[electro]

lol i will not lie to u matty but i have done this ages ago and for got every thing lol neva used it once part from sum cable sizes that is it lol

 

[NozSpark]

TBH I've forgotten most of those things...

But Q7..

Capacitors are DC blockers,, they will not act like a potential divider

the total capacitance of capacitors in series is the same as resistors in parallel (but for capacitors)